A theme park management tycoon game with an aquatic twist. Design your displays, look after your fish, manage your staff and keep your guests happy! It's all in a day's work as the curator of your very own Megaquarium.
All Reviews:
Very Positive (148) - 83% of the 148 user reviews for this game are positive.
Release Date:
Sep 13, 2018

Sign in to add this item to your wishlist, follow it, or mark it as not interested

Buy Megaquarium



Recent updates View all (7)

September 18

Hot fix v1.0.9

Hey guys, I've just pushed a hot fix for an issue introduced with yesterday's optimisation changes.

If you had the issue where your staff were standing idle and not completing tasks, this patch will immediately fix the issue.

I am so sorry to anybody who lost their aquarium or fish due to this bug. I am going to continue to test the issue this afternoon to make sure it is 100% fixed but I wanted to get this patch out to you as soon as possible.

5 comments Read more

September 17

Patch v1.0.8

Today's patch tackles two issues that have come up a lot in the last 48 hours.

- Major performance improvements in large aquariums.
- Severely reduced logging in log files.
- Some underlying bug fixes and stability improvements.

Performance improvements
I know some of you have been waiting for this one. The improvements I made today should make a significant difference to the smoothness and speed of the game once your aquarium gets large.

In very large aquariums you'll still probably encounter the odd judder here and there but the game should be totally playable right into the late game.

I can still squeeze more performance out of the engine in due course so more performance improvements will come out over the course of the coming days and weeks.

Log files
If you're one of the people who's suffered with a humongous log file and running out of disc space, please accept my apologies. These files are completely safe to delete (although I believe the game will wipe it automatically next time you run it) and from now on the logs should be much smaller.

Please let me know if they are still too big. I know some of you like to play the game for many hours in a row!

Thank you again for your continued patience. I hope you agree that the game has come a long way in terms of stability even since release just 5 days ago.

My next job is to tackle those loading times.

Let me know if you have any other problems,

21 comments Read more

Release is just the beginning

(A note from the developer)

Thank you to everyone for the amazing response in the run up to release. This note is to let players know what my plans are in the coming weeks after launch.

Directly after launch I'll most likely be working flat out working on bug fixes, optimisation and user interface improvements in reaction to feedback from players.

After that there are a couple of fundamental features that still need to be implemented. These are:

  • Cloud save
  • Steam workshop/mod support

After that is when things start to get really interesting, with the potential for new content and ways to play the game. I'll be deciding what's next based on your feedback so be sure to let me know what you'd love to see in the game!


(Developer, Twice Circled)

About This Game

From the creator of Big Pharma comes a brand new economic simulation game. Megaquarium follows in the footsteps of classic theme park management tycoon games and adds an aquatic spin!

A living simulation

Starting with just a few tanks and the most basic of livestock, you’ll grow your aquarium to a thronging metropolis filled with hundreds of guests, tens of staff and a multitude of different aquatic lifeforms, each with their own unique care requirements.

Design your exhibits

Megaquarium features almost 100 different marine species including fish, sharks, crustaceans, corals, jellyfish, other invertebrates and even a turtle! You’ll be spoilt for choice as you design, decorate and populate your tanks.

The right staff for the job

You won’t get far without the right staff. Choose who to hire based on their skills and future potential. Will you train up a team of multi-disciplined staff or a set of super-focussed experts? You’ll have to weigh up the pros and cons of each strategy and work out what is right for your aquarium.

Research new animals and technology

As guests experience your displays you’ll earn points which you can assign to discovering new livestock and equipment. Keep upgrading and expanding your aquarium and work your way up to the most prestigious animals and displays in the aquarium industry.

Manage your finances

The latest fish might look cool, but have you considered its impact on your aquarium’s bottom line. Tricky animals may require new staff to be hired, expensive fish food or supplements and the best tanks are a hefty investment! As aquarium curator you’ll need to master creativity and economics to succeed.

Manage your guests!

Keep your guests happy by providing them with seating, food, drinks and toilet facilities. Then at the end of their visit, direct them through the gift shop to boost your profits!

Curator school

Start your career in the campaign mode where you’ll learn everything you need to know about designing and managing an aquarium. Each of the 10 levels challenges you to build an aquarium with unique gameplay conditions and objectives, while new features and concepts are explained along the way.

Dive into the sandbox

Next explore sandbox mode where, with customisable settings and a random challenge generator, you can find virtually unlimited fish-related gameplay!

Easy to learn, difficult to master

Running an inefficient aquarium is easy. To really thrive and take on the greatest challenges you’ll need a lateral thinking brain and attention to detail. Will you group your animals by food type, water quality or something else entirely? Will you locate your equipment in a centralised hub using pumps or spread them out embracing the zoning system? How will you optimise your layout so that visitors can find your tanks and staff can easily access them?

Every decision you make in Megaquarium has consequences. Your choice of animals, filters, tanks, staff and layout all have subtle and far reaching effects on each other. Experiment, adjust, learn, reapply and most importantly, have fun!


  • 10 level ‘learn the game’ campaign
  • Sandbox mode with full customisation and random challenge generator
  • 97 species of livestock to discover each with their own unique care requirements
  • Over 100 different objects to place including filters, skimmers, nitrate reactors, chillers, heaters, food boxes, equipment stations, doors, gates, food and drink dispensers, balloon stands, decorations, paint and more!
  • Plan staff talks down to the subject, time and frequency to increase your point income even further!
  • Gift shop and guest facilities
  • Fully featured theming and decoration system

System Requirements

    • Requires a 64-bit processor and operating system
    • OS: Windows 7 64 bit
    • Processor: Intel Core i5-4690 or AMD Ryzen 7 2700U
    • Memory: 8 GB RAM
    • Graphics: GeForce GTX 560 or AMD Radeon HD 7770
    • Storage: 1 GB available space
    • Requires a 64-bit processor and operating system

What Curators Say

13 Curators have reviewed this product. Click here to see them.
Customer reviews
High Volume of Reviews Detected:
Exclude  or  View Only
Review Type

Purchase Type


Date Range
To view reviews within a date range, please click and drag a selection on a graph above or click on a specific bar.

Show graph

Display As:
Review Beta NEW!
When enabled, will sort reviews by new Helpfulness score. Read more about it in the blog post.
Show graph
Hide graph
Review Helpfulness Beta Enabled
There are no more reviews that match the filters set above
Adjust the filters above to see other reviews
Loading reviews...